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Horizontal well completion and sand control water controlling screen pipe

A technology for horizontal wells and water screens, which is applied in wellbore/well components, production fluids, earthwork drilling and production, etc. It can solve problems such as erosion and complex structures during use, and achieve the goal of increasing recovery and reducing water breakthrough time Effect

Inactive Publication Date: 2015-09-09
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current research, the water control screen mainly adopts the second method. Among the existing products, the structure is relatively complicated, and there are serious erosion phenomena during use.

Method used

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  • Horizontal well completion and sand control water controlling screen pipe
  • Horizontal well completion and sand control water controlling screen pipe
  • Horizontal well completion and sand control water controlling screen pipe

Examples

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Effect test

Embodiment Construction

[0031] Such as figure 1 Among them, a water control screen for horizontal well completion and sand control, including a base pipe 1, the base pipe 1 in this example can be multi-section or single-section, each section is connected by a coupling 11, and the first section The front end of the base pipe 1 of the section is provided with a plugging head 12 .

[0032] Taking a single section as an example, the base pipe 1 is covered with a screen 7 and a restrictor 6. The restrictor 6 is cylindrical, and a joint is provided between the inner wall of the restrictor 6 and the outer wall of the base pipe 1. The flow device; the screen 7 is also cylindrical, and the screen 7 is provided with a screen hole, and the screen 7 is made of stainless steel.

[0033] One end of the restrictor 6 is connected to the base pipe 1 through the first support plate 2, the other end of the restrictor 6 is connected to one end of the screen 7, and the other end of the screen 7 is connected to the base ...

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Abstract

Disclosed is a horizontal well completion and sand control water controlling screen pipe. According to the horizontal well completion and sand control water controlling screen pipe, a screen and a throttle sleeve a base pipe, wherein the throttle is in a tubular shape; a throttle device is arranged between the inner wall of the throttle and the outer wall of the base pipe; one end of the throttle is connected with the base pipe through a first support disc, the other end of the throttle is communicated with one end of the screen, and the other end of the screen is connected with the base pipe through a second support disc; the outer wall of the base pipe between the first support disc and the throttle device is provided with at least one through hole so that a cavity formed between the inner wall of the throttle and the outer wall of the base pipe can be communicated with the inner cavity of the base pipe. The horizontal well completion and sand control water controlling screen pipe can delay the water breakthrough time during an oil recovery process and improve the recovery efficiency; the throttle device can reduce the occurrence of bottom water coning or cresting due to production pressure change.

Description

technical field [0001] The invention relates to the field of oil production equipment, in particular to a water control screen for horizontal well completion and sand control. Background technique [0002] Horizontal well development technology has been widely used in the development of oil and gas reservoirs, especially bottom water reservoirs, thin layer reservoirs and low permeability reservoirs. However, the horizontal wells in Xinjiang, Shengli, Dagang and other oilfields have produced water prematurely to varying degrees, and the water output has increased day by day, causing many oil wells to be severely flooded and forced to stop production. [0003] Aiming at the common problem of bottom water coning in bottom water reservoirs, many water control and water shutoff technologies have been formed at home and abroad. Measures are mainly taken from three aspects: First, by adjusting the net production pressure difference of the horizontal well section, the oil-water inte...

Claims

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Application Information

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IPC IPC(8): E21B43/08E21B43/32
Inventor 邓福成
Owner YANGTZE UNIVERSITY
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